40 



GENEllIC SYSTEM. 



MULTIVALVES. 



1 Chiton - 40 8 



2 Lepas - 45 19 



3 Pholas. - 12 5 



BIVALVES. 



4 Mya - 41 18 



5 Solen - 35 12 



6 Tellina - 97 25 



7 Cardium - 54 16 



8 Mactra - 37 15 



9 Donax - 21 7 



10 Venus - 116 34 



11 Spondylus 4 



12 Chama - 25 1 



13 Area - 45 9 



14 Ostrea - 84 13 



15 Anomia - 32 5 



16 Mytilus - 49 17 



17 Pinna - 21 3 



UNIVALVES. 



18 Argonauta 11 



19 Nautilus - 58 22 



20 Conus - 155 



21 Cyprgea - 68 2 



22 Bulla - 61 20 



23 Voluta - 186 16 



24 Buccinum 172 18 



25 Strombus 44 3 



26 Murex - 171 27 



27 Trochus - 130 13 



28 Turbo - 167 77 



29 Helix - 189 70 



30 Nerita - 70 11 



31 Haliotis - 21 1 



32 Patella - 102 14 



33 Dentalium 15 7 



34 Serpula - 38 28 



35 Teredo - 4 1 



36 Sabella - 25 13 



Total - 2445 550 



